The graph below shows the average monthly change in the prices of three metals during 2014. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The line chart above displays the even monthly variations in the prices of three metals in 2014, including copper,

nickel

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, and

zinc

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.

According to

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the chart, the variation degree of copper and

zinc

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is steadier in comparison to that of

nickel

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, but their collective trends are similar, presenting a "v". At the beginning of 2014, the average change of

zinc

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was 1%, which, after a temporary increase to 3% in February, constantly decreased to -1% in June. The depression lasted for 4 months when the percentage of

zinc

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was always around -0.5%. Towards the end of the year, the proportion of

zinc

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gradually recovered to the level of

this

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March, 2%. The situation of copper was basically similar, despite with a milder extent.

On the contrary

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, the monthly variations of

nickel

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were considerably remarkable. In January, the percentage was 6%, which rapidly declined to 1% within two months, and dropped

further

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to the lowest point of -3% in June. But without any hesitation, the proportion of

nickel

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bounced back to -1% in the next month

,

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and

finally

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returned to the level of 1% in November.